Sinex Severe Original Ultra Fine Mist Nasal Spray starts working in seconds to relieve the sinus and nasal congestion that often accompanies colds or allergies – so you can breathe freely fast. The active ingredient oxymetazoline HCl is an effective nasal decongestant and works for 12 hours for long-lasting relief of nasal stuffiness and sinus pressure. SINUS PRESSURE RELIEF. Effective nasal spray decongestant that relieves sinus pressure and shrinks swollen nasal membranes FOR COLDS AND ALLERGIES. Over-the-counter nasal spray that helps relieve the nasal stuffiness that often accompanies colds, hay fever, or upper respiratory allergies BREATHE FREELY FAST. Provides powerful sinus congestion relief in seconds so you can breathe freely 12 HOUR RELIEF. Works for up to 12 hours for long-lasting relief of nasal stuffiness and sinus pressure ULTRA FINE MIST. Clear your head with an ultra fine mist and powerful Vicks vapors